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orbit

Another asteroid, (944) Hidalgo, is also thought by some to be a defunct comet because of its unusual orbit. That object, discovered in 1920, travels sunward as near as 2.02 AU, which is at the inner edge of the main asteroid belt, and as far as 9.68 AU,…

small body classification

…objects such as the asteroid Hidalgo, which travels between the inner edge of the asteroid belt and a point just beyond the orbit of Saturn. All objects in planet-crossing orbits eventually collide with the Sun or a planet or are permanently ejected from the solar system, although some survive for…